Feature/ollama integration

[rosspeili]

Description

This PR introduces native, local-first support for Ollama models and closes #2. Since many local-first models (like standard llama3) do not yet support the native OpenAI-style tool_calls API, we have implemented a Text-Based Prompt Routing strategy.

This update ensures Skillware is truly model-agnostic, enabling integration with any local LLM capable of generating structured JSON blocks. We have also hardened the core loader and expanded the test suite to ensure 100% deterministic reliability across all supported model families.

Logic & Cognition Changes

• Framework Expansion: Added SkillLoader.to_ollama_prompt() to serialize skill manifests into markdown-formatted instructions suitable for a system prompt.
• Hardened Loader: Updated the dynamic module loader in loader.py to use explicit issubclass validation against BaseSkill.
• Reference Implementation: Created examples/ollama_skills_test.py featuring a robust execution loop that utilizes RegEx to extract and execute json blocks from the LLM's raw text stream.
• Standardized Styling: Performed a repository-wide linting cleanup (PEP8) to ensure CI compatibility and code quality.

Type of Change (Matches Issue Templates)

• 🚀 Skill Proposal: New Skill (Contains manifest.yaml, skill.py, and instructions.md)
• 🐛 Bug Report Fix: Non-breaking change which fixes an execution error or framework bug
• 📖 Doc Fix: Documentation Update
• 🧠 Framework Feature / RFC Updates: Core Framework Update (Changes to base_skill.py, loader.py, etc.)

Checklist (For the Submitting Agent / Developer)

• My code follows the Agent Code of Conduct.
• I have included a properly formatted manifest.yaml (if submitting a new skill).
• The skill logic operates purely in Python and does not rely on arbitrary LLM code generation.
• Requirements and env_vars are explicitly documented in the manifest.
• I have written unit tests proving deterministic execution and schema compliance (14/14 tests passing).
• I have verified that SkillLoader successfully loads this module without missing dependency errors.

Constitution & Safety (If adding/modifying a Skill)

This framework update enables local execution, enhancing data privacy. No modifications were made to the internal safety boundaries of individual skills.

Related Issues

Closes #2